Connector for electro-magnet coils



(.No Model.)

M. 0. SOUTHWORTH. GONNEGTOR FOR ELEOTRO MAGNET OOILS.

N0. 508,643. Patented NOV. 14,1893.

(D A I IN UivITEI) STATES PATENT OFFI E.

MARTIN O. SOUTHWORTH, OF LYNN, ASSIGNOB. .TO THE GENERAL ELECTRICCOMPANY, OF BOSTON, MASSACHUSETTS.

CONNECTOR FOR ELECTRO-MA GNET COILS.

SPECIFICATION forming part of Letters Patent No. 508,643, dated November14, 1893.

Application filed January 31. 1893- Serial No. 460,239. (No model.)

To all whom it may concern:

Be it known that I, MARTIN O. SOUTHWORTH, a citizen of the UnitedStates, residing at Lynn, county of Essex, and State of Massachusetts,have invented certain new and useful Improvements in Connectors forElectro- Magnet Coils, of which the following is a specification.

My invention relates to dynamo electric machinery, and it consists in animproved connector for the terminals of the coils of electro magnets,especially the field magnet coils of dynamos and motors. In moving thesecoils about the shop, and in transporting the machines, the projectingconnectors are liable to be broken ofi.

The object of my invention is to prevent damage to the connectors bymaking them more or less yielding. The connector is composed of alaminated copper strip bent into an eye around a rigid metal bushing andprotected by an outer layer of heavier metal, such as iron. The end ofthe flexible strip is connected with the end of the coil, the stripbeing secured upon the outside of the coil by a wrapping of cord or thelike.

In the drawings, Figure 1 is an elevation of a dynamo electric machine,provided with my improved connectors. Fig. 2 is a section of a portionof one of the field magnets and connectors. Fig. 3 is a perspectiveview, and Figxlis an enlarged end view of a connector.

At each end of the wire A, constituting the winding of the coil, are twoor three turns of heavy wire A, to which are soldered the ends of alaminated copper strip B, doubled at its middle around a rigid bushing Oof metal. The laminations are left free to move upon each other, so thatthe strip has great flexibility. The strip is led along outside of thewinding a suitable distance, being separated therefrom by insulation D.The middle eye portion 1) is then bent outwardly and inclosed in a stifisheathing of iron E, the ends e of which are spread out flat on thewinding. Over these ends is laid a piece of cardboard F, and a wrappingof cord G is then wound over the ends 6, the cardboard and the body ofthe strip B, suitable insulation D being interposed between the stripand the wrapping. A set screw H is inserted into the side of the eye I)to hold the conductor I by which the coil is connected with the desiredcircuit. This construction gives great strength and durability, but isfree to yield to blows or strains and thus reduce the liability tobreakage. It is evident, however, that it may be considerably variedwithout departing from the spirit of my invention.

In some cases it may be possible to dispense with the bushing, or thesheathing, or the cardboard, or any or all of them.

What I claim as new, and desire to secure by Letters Patent, is

1. Aconnectorforelectro magnetcoi1s,composed of a strip of metal doubledtogether and formed into an 'eye, substantially as described.

2. A connector for electro magnet coils, composed of a strip of metaldoubled together around a rigid bushing, substantially as described.

3. The combination with an electro magnet, of a laminated strip of metalconnected with the end of the winding, substantially as do scribed.

4.. The combination with an electro magnet, of a laminated strip ofmetal having its ends connected with the end of the winding, and itsmiddle portion formed into an eye to receive a conductor, substantiallyas set forth.

5. The combination with an electro magnet, of a flexible strip of metalconnected with the end of its winding and secured to the magnet by awrapping of cord, substantially as described.

6. A connector for electro magnet coils, composed of a rigid bushing anda laminated strip of metal doubled around said bushing, substantially asset forth. 9o

7. A connector for electro magnet coils composed of a rigid bushing, alaminated strip of metal doubled around said bushing, and a sheathing ofstiff metal covering the eye thus formed, substantially as described.

8. A connector for electro magnet coils, composed of a strip oflaminated metal, having its ends doubled together, and its middleportion forming an eye to receive a conductor,

In Witness whereof I have hereunto set my substantially as set forth.

hand this 27th day of January, 1893. 9. The combination with an electroma net, r r 1 of a connector comprising an eye proje ting MARTIN SOUPHWORLH' Witnesses:

JOHN NV. GIBBONEY, ELIHU THOMSON.

5 above the surface of the coil, and a flexible metallic stripconnecting said eye with the Winding of the coil, substantially as setforth.

